CN102635542B - No-harass switch control system of water pump - Google Patents
No-harass switch control system of water pump Download PDFInfo
- Publication number
- CN102635542B CN102635542B CN201210108152.4A CN201210108152A CN102635542B CN 102635542 B CN102635542 B CN 102635542B CN 201210108152 A CN201210108152 A CN 201210108152A CN 102635542 B CN102635542 B CN 102635542B
- Authority
- CN
- China
- Prior art keywords
- control
- loop
- water pump
- motor
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Multiple Motors (AREA)
Abstract
The present invention relates to no-harass switch control system of water pump, include the main circuit be connected with controlled pump motor and the control loop controlling described main circuit, wherein, described control loop accesses power supply by circuit breaker, major loop is arranged two state selecting switch, the first and second status circuits corresponding after two state selecting switch are in parallel and each status circuit is all arranged a time delay relay; Each time delay relay all carry one electric time closed immediately and power-off time extend set time after the time delay that disconnects disconnect auxiliary contact.The present invention is not when changing any manufacturing equipment of water pump system; by means of only the upgrading of electrical equipment; achieve pump motor to switch and non-stop-machine control mode mutually on concentrated and machine side; and can operating box and HMI(man-machine interface at the scene) on carry out start stop operation, improve the safety reliability of water pump system and property convenient for control.
Description
Technical field
The present invention relates to a kind of water pump handover control system, the water treatment system that every profession and trade needs continuous firing can be widely used in.
Background technique
High industry is being required to water treatment system operation duration, in some system as the continuous annealing of iron and steel enterprise, zinc-plated, hot rolling, blast furnace and converter, all need circulating water to carry out the normal operation of cooling equipment guarantee equipment, stop causing great property loss once supply water.So, ensure that the reliability of water treatment system pump working and persistency are the preconditions that whole system is normally run.
At present, our water system is all adopt PLC system to control.But usually, our water pump may cause the interruption run because of a variety of causes at scene, the power-off of such as PLC, fault or shutdown; The interruption of communication network; The switching etc. of operator scheme when maintenance and emergency.Will make a big impact to the normal work of water treatment system thus, so in current method, system reliability, persistency and Security all have much room for improvement.
Summary of the invention
The technical problem that will solve of the present invention is: overcome above-mentioned technological deficiency, a kind of no-harass switch control system of water pump is provided, water pump system continuous service can be ensured when control system switches, the reliability of abundant raising water pump system and Security, simultaneously for debugging and the maintenance of pump group provide convenient, increase the working life of water pump system.
For solving technique scheme, the technical solution used in the present invention is:
No-harass switch control system of water pump, include the main circuit be connected with controlled pump motor, and control the control loop of described main circuit, wherein, described control loop accesses power supply by circuit breaker, include by the spot with long-range two kinds of modes to the on off control module of the startup and stopping that controlling motor, to judge and the operation that whether normally runs of indication motor and fault state indicating module and the operator scheme that can carry out double mode selection select module, it is characterized in that described operator scheme selection module is: control loop major loop is arranged dibit selector switch, control loop and the parallel connection of telecontrol loop on the spot after dibit selector switch, and each status circuit corresponding after dibit selector switch all arranges a time delay relay, each time delay relay all carry one electric time closed immediately and power-off time extend set time after disconnect often drive auxiliary contact.
By technique scheme, described on off control module is: the normally-closed contact of series contactor, main disconnector normally opened contact and three-phase thermorelay again after the manual switching on/off circuit that control loop is corresponding on the spot and long-range switching on/off circuit parallel connection; In manual switching on/off circuit, one controls the normally-closed contact of stop button of time delay relay successively on operated in series case and the normally opened contact of start button, the simultaneously upper contactor normally opened contact of stop button contact shunt one on the spot; In long-range switching on/off circuit, a telecontrol time delay relay is connected successively and is exported the normally opened contact of starting relay and the normally-closed contact of slew relay of control by PLC, simultaneously the normally-closed contact of a slew relay upper contactor normally opened contact in parallel.
By technique scheme, after the indicating fault loop of operation and fault state indicating module and operation/stopping instruction loop parallel connection, be connected in series main disconnector and thermorelay successively; The normally opened contact of the coils connected in series main disconnector of the auxiliary reclay in indicating fault loop; Run/stop the auxiliary reclay two ends normally opened contact of series contactor and the normally opened contact of main disconnector respectively in instruction loop; Operation and fault state indicating module also comprise the pilot lamp loop showing various running state, and each pilot lamp loop is in series by an auxiliary reclay and tutorial light; The auxiliary contact of often opening of the auxiliary reclay in indicating fault loop are connected with fault indicating lamp loop; The auxiliary contact of often opening running/stop the auxiliary reclay in instruction loop are connected with run indicator loop with stopping pilot lamp loop respectively.
By technique scheme, system is also provided with and is monitored motor status by the input and output point of PLC system under remote status and the man-machine interface of on off control.
By technique scheme, described state be on the spot set to manual control motor with regard to ground mode, remote status is set to the remote mode of manual control and PLC automatic control motor.
By technique scheme, the three-phase electrical source of power in main circuit is drawn on the circuit breaker of motor control center, and by being connected to motor after contactor, thermorelay.
By technique scheme, each relay, contactor, circuit breaker are all arranged on motor control center, selector switch, each button, tutorial light are arranged in field operation box, and field operation box is linked into motor control center, is connected alternately between motor control center with PLC system by control signal.
When adopting no-harass switch control system of water pump to carry out pump motor control, different pump motor control modes is selected according to the requirement that water pump system runs, adopt remote control water pump motor mode when water pump normally works, PLC is automatically or according to setting process parameter or the supervision completed motor status and on off control; When fault of water pump, need to safeguard or on-the-spot emergency start time, select the pump motor of the control on the spot mode of the operation of operating box at the scene; The non-stop-machine no-harass switch of motor under two patterns is realized by the time delay relay arranged respectively under each mode state during mutual switching.
When needing operation water pump to be switched to regard to ground mode from remote mode, by dibit selector switch from long-range contact change-over to contact on the spot, namely dibit selector switch from long-range contacting be switched on the spot contacting time, the time delay relay coil of the manual control circuit that status circuit is corresponding on the spot immediately electric, corresponding auxiliary contact close immediately, time delay relay coil blackout simultaneously on remote status control circuit, but the time delay relay auxiliary contact after power-off still temporarily remain closed, now on the spot, time delay relay normally opened contact on remote status control circuit, contactor normally opened contact is in obtain electric closed state simultaneously, after remote status control circuit delay time arrives, time delay relay normally opened contact disconnects, then remote status circuit disconnects, now status circuit still keeps connecting on the spot, then in whole handoff procedure, motor and water pump remain running state, achieve and be switched to switching undisturbed with regard to ground mode from remote mode, as operation motor and pump are switched to remote mode from regard to ground mode by needs, now the state of dibit selector switch is Work in Place pattern, i.e. contacting on the spot, needs to be switched to long-range contacting, time delay relay coil after switching on remote status control circuit immediately electric, its auxiliary point closes immediately, and the time delay relay coil blackout of the manual control circuit that status circuit is corresponding on the spot, but the time delay relay auxiliary contact after power-off still temporarily remain closed, now on the spot, time delay relay normally opened contact on remote status control circuit, contactor normally opened contact is in obtain electric closed state simultaneously, after state control circuit delay time arrives on the spot, time delay relay normally opened contact disconnects, then status circuit disconnects on the spot, now remote status circuit still keeps connecting, then in whole handoff procedure, motor and water pump remain running state, achieve the switching undisturbed from being switched to remote mode with regard to ground mode.
Relative to prior art; the present invention is not when changing any manufacturing equipment of water pump system; by means of only the upgrading of electrical equipment; achieve pump motor long-range and switch and non-stop-machine control mode mutually on the spot; and can operating box and HMI(man-machine interface at the scene) on carry out start stop operation, improve the safety reliability of water pump system and property convenient for control.
In addition; due to the start and stop adopting dual output time delay relay to control pump motor; dual-delay relay be in short-term electric duty; relay then auto-breaking immediately after startup completes; the working life of relay is extended relative to single relay system of long-time adhesive; can shut down simultaneously, still keep under the situation such as network interruption the operation of water pump at PLC, improve the security and stability of plant operation.
Finally; the no-harass switch function of this control system can realize carry out long-range/switch on the spot time run the continuous service of motor and water pump; the persistency of this function for water pump operation under accident emergency provides guarantee; simultaneously for debugging and the maintenance of pump group are provided convenience; avoid because of long-range/switch on the spot and the water pump frequent start-stop caused; do not shut down after realizing plant maintenance and directly put into operation, reduce the start-stop time to electrical network impact and equipment, increase the working life of equipment.
Accompanying drawing explanation
Fig. 1 is: the control loop circuit diagram of no-harass switch control system of water pump of the invention process.
Fig. 2 is: the main loop circuit figure of no-harass switch control system of water pump of the invention process.
Fig. 3 is: the PLC input signal allocation plan of no-harass switch control system of water pump of the present invention.
Fig. 4 is: the PLC of no-harass switch control system of water pump of the present invention outputs signal allocation plan.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, but do not limit the present invention.
No-harass switch control system of water pump of the present invention is divided into telecontrol and control mode on the spot, different control modes is selected according to the requirement of pump, remote controlled manner is adopted when generally pump is normal, PLC is according to technological requirement, automatically the quantity starting pump is determined, when failure of pump, need to safeguard or on-the-spot emergency start time, control mode on the spot selected by pump, realizes no-harass switch when mutually switching by time delay relay.
Electric control loop is the hardware environment of whole system.As shown in Figures 1 and 2, its control loop comprises motor M, MCC(Motor Control Center, motor control center) control cabinet, PLC(programmable logic controller (PLC)) cabinet, HMI(man-machine interface), field operation box.Wherein selector switch, button, tutorial light etc. are installed in field operation box, are convenient to operate motor at the scene and monitor.Selector switch can on the spot, remote operation switches, when failure of pump, need safeguard or on-the-spot emergency start time, selector switch is threaded to local operation, and now pump is in the state of Non-follow control on the spot of field operation box operation completely, does not affect by PLC device and any of program.When selector switch is threaded to remote operation, pump can carry out manual start and stop on HMI, also can select automatic mode on HMI, automatic start-stop, when when the enterprising line operate of HMI, has come supervision to motor status and on off control by the input and output point of PLC.The electrical controls such as circuit breaker, contactor, thermorelay, auxiliary reclay and time delay relay and protection element are installed in MCC control cabinet, and state signal is sent in PLC, and remote control signal is sent by PLC.
In accompanying drawing 1 ~ 4, each control unit with protection element effect and annexation is: Q11 is major loop circuit breaker, Q12 is control loop circuit breaker, is responsible for the break-make controlling power supply; K11 is contactor, time closed, and pump operation, during disconnection, pump stops; F11 is thermorelay, and motor overheating is protected; S11 is selector switch, be control mode on the spot when selecting 1-2 to connect, now export starting relay K31 and slew relay K32 by PLC to control, be remote controlled manner when selecting 3-4 to connect, now controlled by field operation box start button S12 and stop button S13; K12, K13 are auxiliary reclay, and the fault of circuit breaker and thermorelay is sent to operating box tutorial light to K12 auxiliary point and PLC monitors, operation/stop signal is delivered to operating box tutorial light to K13 auxiliary point and PLC monitors; K14, K15 are time delay relay, respectively carry a time delay and disconnect auxiliary point, when relay obtains electric, corresponding auxiliary contact of often opening close immediately, when power is off, disconnect after contact time delay certain hour, this ensure that in the process switched, relay is dead electricity, but the auxiliary contact of its correspondence are still closed, and equipment can keep former running state certain hour; H21, H22, H23 are signaling lamp on operating box, reflected pump operation respectively, stopping, fault state.
Figure 1 shows that control loop of the present invention, two line traffic control power supply (Ac 220V, phase line 1L01, zero line 1L02) be connected to MCC control cabinet by circuit breaker Q 12, comprise in MCC control cabinet and run control loop, indicating fault loop, operation instruction loop, on the spot/Remote Selection loop.Q12 circuit breaker is housed between control loop and incoming power short circuit and overload protection are carried out to whole control loop.Control loop is mainly divided into 3 parts.
(1) on off control part.By controlling startup and the stopping of motor with long-range two kinds of modes on the spot.Time delay disconnects the normally opened contact normally closed point of serial operation case stop button S13 and the normal battle of start button S12 respectively of relay-K14, simultaneously in S12 parallel connection the normal battle of contactor K11 as self-insurance; The normally opened contact that time delay disconnects relay-K15 connect respectively the normally closed point of slew relay (PLC outputs) K32 and starting relay (PLC output) K31 normal battle, while K31 parallel connection on normal battle of contactor K11 as self-insurance.Then coil, the normally opened contact of main disconnector Q11, the normally-closed contact of thermorelay F11 of above two circuit in series contactor K11.
(2) operation and fault state indicating section.The normally opened contact of coils connected in series main disconnector Q11 of auxiliary reclay K12, the normally-closed contact of thermorelay F11, as the judgement of fault state, operating box tutorial light H23 indicating fault status delivered to by the auxiliary contact of often opening of K12.The normally opened contact of the coils connected in series contactor K11 of auxiliary reclay K13, the normally opened contact of main disconnector Q11, the normally-closed contact of thermorelay F11, as the judgement of running state, operating box tutorial light H21 instruction running state delivered to by the auxiliary contact of often opening of K13, and the normally closed auxiliary contact of K13 is delivered to operating box tutorial light H22 and indicated halted state.
(3) operator scheme selects part.Switch S on operating box 11, two selects to connect respectively in position time delay relay K14 and K15, as controlling on the spot or the selection of telecontrol.As process pump is switched to regard to ground mode from remote mode by needs, then dibit selector switch S11 is switched on the spot from long-range, namely S11 connects from 3-4 and is switched to 1-2 connection, time delay relay K14 coil immediately electric, corresponding auxiliary contact of often opening close immediately, simultaneously time delay relay K15 coil blackout, but the K15 after power-off often drives auxiliary contact still temporarily remains closed, now the normally opened contact of K14 and K15, contactor K11 normally opened contact are in obtain electric closed state simultaneously.After K15 delay time arrives, its normally opened contact disconnects, but now K14 still keeps connecting, then in whole handoff procedure, motor and water pump remain running state, achieve and are switched to switching undisturbed with regard to ground mode from remote mode.
As process pump is switched to remote mode from regard to ground mode by needs, then that dibit selector switch S11 is long-range from being switched on the spot, time delay relay K15 coil immediately electric, corresponding auxiliary contact of often opening close immediately, time delay relay K14 coil blackout simultaneously, but the K14 after power-off assists normally opened contact still temporarily to remain closed, now the normally opened contact of K14 and K15, contactor K11 normally opened contact are in obtain electric closed state simultaneously.After K14 delay time arrives, its normally opened contact disconnects, but now K15 still keeps connecting, then in whole handoff procedure, motor and water pump remain running state, achieve and are switched to switching undisturbed with regard to ground mode from remote mode.
Figure 2 shows that main circuit loop of the present invention, three phase line 1L1,1L2,1L3 of three-phase electrical source of power often open main contact by being connected to contactor K11 after circuit breaker Q 11, then under meet three-phase thermorelay F11 and provide thermal overload protection to main circuit loop.
Figure 3 shows that PLC input signal allocation plan of the present invention, Q11 main disconnector state often drives auxiliary contact, F11 thermorelay state often drives auxiliary contact, K11 running state often drives auxiliary contact, K15 telecontrol is often driven auxiliary contact and sent into PLC output module respectively, for centralized control and the programming of PLC.The auxiliary contact of often opening of Q12 connect L+ and each passage, then cut off all signals when Q12 disconnects.
Figure 4 shows that PLC of the present invention outputs signal allocation plan, K31 is the auxiliary reclay controlling to start, and K32 is the auxiliary reclay controlling to stop.The normally closed auxiliary contact of K32 and the auxiliary contact of often opening of K31 are all connected in " remote activation/stopping " loop of Fig. 1, stop as the startup controlling water pump under remote status.
Above disclosedly be only preferred embodiment of the present invention; certainly the interest field of the present invention can not be limited with this; therefore the equivalence change done according to the present patent application the scope of the claims, as the variation made process parameter or device and improvement still belong to protection scope of the present invention.
Claims (7)
1. no-harass switch control system of water pump, include the main circuit be connected with controlled pump motor, and control the control loop of described main circuit, wherein, described control loop accesses power supply by circuit breaker, include by state and remote status two kinds of modes on the spot to the on off control module of the startup and stopping that controlling motor, to judge and the operation that whether normally runs of indication motor and fault state indicating module and the operator scheme that can carry out double mode selection select module, it is characterized in that described operator scheme selection module is: control loop major loop is arranged dibit selector switch, state control loop and the parallel connection of remote status control loop on the spot after dibit selector switch, and each status circuit corresponding after dibit selector switch all arranges a time delay relay, each time delay relay all carry one electric time closed immediately and power-off time extend set time after disconnect often drive auxiliary contact, when adopting no-harass switch control system of water pump to carry out pump motor control, different pump motor control modes is selected according to the requirement that water pump system runs, remote status is adopted to control pump motor mode when water pump normally works, when fault of water pump, need to safeguard or on-the-spot emergency start time, select the state on the spot of the operation of operating box at the scene to control pump motor mode, the non-stop-machine no-harass switch of motor under two patterns is realized by the time delay relay arranged respectively under each mode state during mutual switching.
2. no-harass switch control system of water pump according to claim 1, is characterized in that: described on off control module is: the normally-closed contact of series contactor, main disconnector normally opened contact and three-phase thermorelay again after the manual switching on/off circuit that state control loop is corresponding on the spot and long-range switching on/off circuit parallel connection; In manual switching on/off circuit, one controls the normally-closed contact of stop button of time delay relay successively on operated in series case and the normally opened contact of start button, the simultaneously normally opened contact of a start button contactor normally opened contact in parallel on the spot; In long-range switching on/off circuit, a telecontrol time delay relay is connected successively and is exported the normally opened contact of starting relay and the normally-closed contact of slew relay of control by PLC, simultaneously the normally opened contact of a starting relay contactor normally opened contact in parallel.
3. no-harass switch control system of water pump according to claim 2, is characterized in that: be connected in series main disconnector and thermorelay successively after the indicating fault loop of operation and fault state indicating module and operation/stopping instruction loop parallel connection; The normally opened contact of the coils connected in series main disconnector of the auxiliary reclay in indicating fault loop; Run/stop the auxiliary reclay two ends normally opened contact of series contactor and the normally opened contact of main disconnector respectively in instruction loop; Operation and fault state indicating module also comprise the pilot lamp loop showing various running state, and each pilot lamp loop is in series by an auxiliary reclay and tutorial light; The normally closed auxiliary contact of the auxiliary reclay in indicating fault loop is connected with fault indicating lamp loop; The normally closed auxiliary contact running/stop the auxiliary reclay in instruction loop is connected with stopping pilot lamp loop; The auxiliary contact of often opening running/stop the auxiliary reclay in instruction loop are connected with run indicator loop.
4. no-harass switch control system of water pump according to claim 3, is characterized in that: no-harass switch control system of water pump is also provided with and is monitored motor status by the input and output point of PLC system under remote status and the man-machine interface of on off control.
5. no-harass switch control system of water pump according to claim 4, is characterized in that: described state be on the spot set to manual control motor with regard to ground mode, remote status is set to the remote mode of manual control and PLC automatic control motor.
6. no-harass switch control system of water pump according to claim 5, is characterized in that: the three-phase electrical source of power in main circuit is drawn on the circuit breaker of motor control center, and by being connected to motor after contactor, thermorelay.
7. no-harass switch control system of water pump according to claim 6, it is characterized in that: each relay, contactor, circuit breaker are all arranged on motor control center, dibit selector switch, each button, tutorial light are arranged in field operation box, field operation box is linked into motor control center, is connected alternately between motor control center with PLC system by control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210108152.4A CN102635542B (en) | 2012-04-13 | 2012-04-13 | No-harass switch control system of water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210108152.4A CN102635542B (en) | 2012-04-13 | 2012-04-13 | No-harass switch control system of water pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102635542A CN102635542A (en) | 2012-08-15 |
| CN102635542B true CN102635542B (en) | 2015-09-30 |
Family
ID=46620072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210108152.4A Active CN102635542B (en) | 2012-04-13 | 2012-04-13 | No-harass switch control system of water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102635542B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352835A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Water pumping control circuit with remote control function |
| CN103389655B (en) * | 2013-07-25 | 2016-07-27 | 中国船舶重工集团公司第七二二研究所 | A kind of remote outage device and system |
| CN104405627B (en) * | 2014-10-29 | 2017-04-19 | 安徽中电兴发与鑫龙科技股份有限公司 | Electric generator cooling water pump control cabinet |
| CN104832413B (en) * | 2015-05-13 | 2017-01-04 | 广西梧州运龙港船机械制造有限公司 | Apparatus for controlling pump peculiar to vessel |
| CN106050631B (en) * | 2016-07-23 | 2019-11-19 | 郴州市东塘电气设备有限公司 | The fire pump controller reliably started |
| CN106050630B (en) * | 2016-07-23 | 2019-11-19 | 郴州市东塘电气设备有限公司 | The fire pump controller for having fire pump electric control starting and mechanical emergency starting |
| CN107781952A (en) * | 2017-04-06 | 2018-03-09 | 北京中联智能科技有限公司 | A kind of special secondary circuit control system of data center's chilled water pump |
| CN106988883B (en) * | 2017-04-07 | 2018-10-19 | 上海航天能源股份有限公司 | A kind of movable type cold, heat and electricity triple supply distributed busbar protection and its control system |
| CN107686877A (en) * | 2017-08-28 | 2018-02-13 | 北京首钢冷轧薄板有限公司 | A kind of uninterrupted cooling water system and control method |
| CN109737042B (en) * | 2019-01-03 | 2024-06-21 | 苏州巨联电气有限公司 | Multi-pump control system and control method |
| CN110725366A (en) * | 2019-10-08 | 2020-01-24 | 彩虹（合肥）液晶玻璃有限公司 | Multi-pump water supply control system, method and device |
| CN111208805A (en) * | 2020-02-20 | 2020-05-29 | 江苏诺蓝翌新能源科技有限公司 | PLC control system changes debugging platform |
| CN111983965A (en) * | 2020-07-02 | 2020-11-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for improving power supply reliability |
| CN112049785B (en) * | 2020-08-28 | 2022-08-05 | 康辉新材料科技有限公司 | Safe linkage control system for de-aeration device softened water supply pump |
| CN112260609A (en) * | 2020-10-12 | 2021-01-22 | 河南中烟工业有限责任公司 | Reciprocating type sediment machine control circuit structure of scraping in air supporting pond |
| CN112260393B (en) * | 2020-10-20 | 2022-06-17 | 新誉庞巴迪信号系统有限公司 | Automatic switching circuit and method for cold standby redundancy system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1599959A1 (en) * | 1988-05-12 | 1990-10-15 | Ворошиловградский Проектно-Технологический Институт Машиностроения Им.Хху1 Съезда Кпсс | Device for controlling reversible electric motor |
| DE4237899A1 (en) * | 1991-11-12 | 1993-05-13 | Peter Poeck | Local controller for electrical drive motors - has multi-phase supply with phases coupled to switching units and safety circuit to protect motor |
| CN201145840Y (en) * | 2008-01-15 | 2008-11-05 | 佛山市顺德区携创电机制造有限公司 | Apparatus for linkage of gas water heater and ventilating fan |
| CN201322856Y (en) * | 2008-12-29 | 2009-10-07 | 西安陕鼓动力股份有限公司 | Manually automatic switching non-halt control circuit for pumping motor of blower unit |
| CN101586733A (en) * | 2009-04-15 | 2009-11-25 | 济南重工股份有限公司 | High-low pressure thin oil automatic stop circuit after mill is stopped |
| CN201539406U (en) * | 2009-11-10 | 2010-08-04 | 平顶山市三源制氢有限公司 | Double-pump oil supply non-stop switching circuit of compressor |
| CN201557068U (en) * | 2009-09-15 | 2010-08-18 | 西安陕鼓动力股份有限公司 | Control device of electromotor lift-up oil pump for fan |
| CN202789462U (en) * | 2012-04-13 | 2013-03-13 | 中冶南方工程技术有限公司 | Undisturbed switching water pump control system |
-
2012
- 2012-04-13 CN CN201210108152.4A patent/CN102635542B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1599959A1 (en) * | 1988-05-12 | 1990-10-15 | Ворошиловградский Проектно-Технологический Институт Машиностроения Им.Хху1 Съезда Кпсс | Device for controlling reversible electric motor |
| DE4237899A1 (en) * | 1991-11-12 | 1993-05-13 | Peter Poeck | Local controller for electrical drive motors - has multi-phase supply with phases coupled to switching units and safety circuit to protect motor |
| CN201145840Y (en) * | 2008-01-15 | 2008-11-05 | 佛山市顺德区携创电机制造有限公司 | Apparatus for linkage of gas water heater and ventilating fan |
| CN201322856Y (en) * | 2008-12-29 | 2009-10-07 | 西安陕鼓动力股份有限公司 | Manually automatic switching non-halt control circuit for pumping motor of blower unit |
| CN101586733A (en) * | 2009-04-15 | 2009-11-25 | 济南重工股份有限公司 | High-low pressure thin oil automatic stop circuit after mill is stopped |
| CN201557068U (en) * | 2009-09-15 | 2010-08-18 | 西安陕鼓动力股份有限公司 | Control device of electromotor lift-up oil pump for fan |
| CN201539406U (en) * | 2009-11-10 | 2010-08-04 | 平顶山市三源制氢有限公司 | Double-pump oil supply non-stop switching circuit of compressor |
| CN202789462U (en) * | 2012-04-13 | 2013-03-13 | 中冶南方工程技术有限公司 | Undisturbed switching water pump control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102635542A (en) | 2012-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102635543B (en) | No-harass switch water pump control method | |
| CN102635542B (en) | No-harass switch control system of water pump | |
| CN201322856Y (en) | Manually automatic switching non-halt control circuit for pumping motor of blower unit | |
| CN103631193B (en) | A kind ofly realize the system and method that equipment control mode concentrates bumpless transfer | |
| CN104991510A (en) | One-in-service-one-standby water pump variable frequency electric control system and control method | |
| CN104917289A (en) | Automatic switching method for emergency power supply and two-way working power supplies of diesel generator | |
| CN108803704A (en) | A kind of controller and its control method of transformer cooler | |
| CN210536534U (en) | Soft starter one-to-many control circuit and system | |
| CN203301225U (en) | Control device based on security-section interlocking self-switchover of gas-steam combined unit | |
| CN112099551B (en) | Transformer cooling control system | |
| CN202789462U (en) | Undisturbed switching water pump control system | |
| CN112377475A (en) | Automatic control system for pipeline groove | |
| CN103326457A (en) | Control method and control device based on gas-steam integral unit security segment interlock automatic switch | |
| CN210428118U (en) | Safe power-off system of tobacco shred making equipment | |
| CN213981403U (en) | Automatic control system for pipeline groove | |
| CN112379664B (en) | Automatic fault diagnosis method for electric valve in electric system | |
| CN105756986B (en) | Fan control method for glass factory | |
| CN211924865U (en) | Dry oil lubrication constant-temperature electrical control system of heavy-load transmission equipment | |
| CN204041502U (en) | A kind of cooling blower control system | |
| CN211296610U (en) | Generator excitation control system | |
| CN216959700U (en) | Motor control device | |
| CN111379846B (en) | Dry oil lubrication constant-temperature electrical control system of heavy-duty transmission equipment | |
| CN206753882U (en) | Industrial water pump control loop system | |
| CN221120257U (en) | Temperature standby control system | |
| CN2324681Y (en) | Fire-extingurishing electric control cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |